44 results about "Shoulder surface" patented technology

A floating pin for positioning a substrate relative to a substrate support includes a shaft configured to move through a guide hole in a substrate support, and a pin head including a top surface and a flat shoulder surface disposed between the top surface and the shaft. The flat shoulder surface is configured to be seated on a recessed surface of the substrate support and seal the guide hole of the substrate support.

Provided is a compact threaded joint which has excellent sealing performance against internal pressure and sealing performance against external pressure, has excellent strength against compressive loads, and can maintain sealing performance against external pressure even when repeated loads are applied. Provided is a compact threaded joint in which external pressure seal sections (21, 31) and internal pressure seal sections (23, 33) are provided in front of and behind threaded sections (22, 32), a nose section (24) for maintaining internal pressure sealing performance is provided at the tip of a pin (2), and torque shoulder surfaces (25, 35) are provided at the tip of the nose section (24). When a compressive load is applied, a portion of the compressive load is applied by contact between the insertion surfaces of the threaded portions (22, 32). Furthermore, by reducing the shoulder angle (theta) of the torque shoulder surfaces (25, 35), the amount of press-fit of the male buckle (2) with respect to the female buckle (3) and the amount of radially inward shrinkage deformation of the opening end of the female buckle (2) when a compressive load is applied are reduced, and accumulation of damage in the vicinity of the outer sealing surface is suppressed.

The present invention discloses a medical device for applying a cinch to a suture, the medical device comprising: an elongated shaft including a proximal region and a distal region, the distal region defining a lumen, and a distally facing end surface; an outer cinch member defining a bore, and a shoulder having a proximally facing shoulder surface, wherein the outer cinch member includes a proximal portion disposed within the lumen and is releasably engaged with the distal region of the elongate shaft such that the shoulder is spaced distally from the distally facing end surface; an elongated inner shaft extending through the lumen and the bore and including a distal end section; an inner cinch member engaged with the distal end section of the elongated inner shaft, the inner cinch member configured to engage the outer cinch member and includes at least a segment configured to fit within the bore; a distally facing shear edge defined by the distal region of the elongated shaft; and a suture cutting member disposed within the lumen and including a proximally facing shear edge, the suture cutting member having an open configuration wherein the proximally facing shear edge is disposed distally of the distally facing shear edge to define an opening between the proximally facing shear edge and the distally facing shear edge, wherein the suture cutting member is designed to shift toward a closed configuration where the proximally facing shear edge has moved proximally relative to the distally facing shear edge such that the opening is closed.

The utility model relates to a double-shoulder self-sealing drilling and boring rod structure for a deep hole drill, which comprises a hollow rod body, a double-end double-shoulder external thread and a double-end double-shoulder internal thread, and the double-end double-shoulder external thread and the double-end double-shoulder internal thread are processed at two ends of the hollow rod body; the thread form is a rectangular square thread, the inner and outer thread ends adopt double shoulders, and an inner and outer thread small end sealing angle and an inner and outer thread large end sealing angle with 13-angle sealing surfaces are machined at the inner and outer thread small end and the inner and outer thread large end; the double-end double-shoulder external thread of one drilling and boring rod is screwed into the double-end double-shoulder internal thread of the other drilling and boring rod, and the whole drilling and boring rod is formed by end-to-end connection after tightening and screwing; the 13-degree sealing surfaces of the large end and the small end of the thread are attached to form an angle self-sealing surface; the rectangular threads of the drilling and boring rod transmit torque, the double-shoulder structure of the threads positions and enhances the strength of the threaded connector, the structure is simple, large torque can be transmitted, two shoulder faces can be sealed at the same time after screwing, and the problem of leakage of cooling liquid is solved.

The present invention relates to a threaded pipe connection. A threaded pipe connection comprising a tubular coupling with first and second female threaded zones formed in opposing sections; and first and second pipes, each comprising a male threaded zone and a shoulder surface at its terminal end, wherein each female threaded zone includes a female thread that tapers radially within the female threaded zone from a maximum diameter at the outer end of the female threaded zone, wherein each male threaded zone includes a male thread that tapers radially so as to reduce in diameter towards the terminal end of the pipe, wherein the threaded pipe connection is configured to enable the first and second pipes to be engaged with the tubular coupling in a made-up configuration in which: the shoulder surfaces of the first and second pipes abut; the entire male threaded zone of the first pipe engages the entire first female threaded zone; the entire male threaded zone of the second pipe engages the entire second female threaded zone; and for each of the first and second female threaded zones. The crest of one of the male and female threads radially interferes with the root of the other of the male and female threads in a first portion of the female threaded zone and does not interfere or interferes by a smaller amount in a second portion of the female threaded zone; the second portion is located at the inner end of the female threaded zone.

To provide a pneumatic tire excellent in aerodynamic performance.SOLUTION: A pneumatic tire 1 includes a tread 10, a sidewall 2, and a shoulder 4, and has an angular ground contact end shape. Each of the shoulders 4 has a shoulder front surface 26 having substantially no corner, and the shoulder front surface 26 has a curved surface 26b having an arc shape curved so as to protrude outward in the tire axial direction. The curvature radius of the curved surface 26b is, for example, not less than 5mm and not more than 15mm.SELECTED DRAWING: Figure 8

Screw nut (1) with an internal thread and two nut parts (2, 3), wherein each of the nut parts (2, 3) has a section (4, 5) of the internal thread which can be slid onto an external thread (30) in a radial direction, and wherein the nut parts (2, 3) have interoperable connecting elements which allow a relative displacement of the nut parts (2, 3) in a direction radial to the axis of the internal thread to a position in use in which the internal thread of the screw nut (1) engages the external thread (30) with minimal play, wherein the connecting elements have guide surfaces (14 - 25) which guide the nut parts (2, 3) of the screw nut (1) in a rotational movement about an axis of rotation extending transversely to the axis of the internal thread when moving into the use position, wherein each nut part (2, 3) has at least one first locking arm (10, 13) which has a guide surface (14, 17) on one side which causes the rotational movement when the nut parts (2, 3) are moved and bears against a complementary guide surface (16, 15) on a second locking arm (12, 11) of the other nut part (3, 2), and wherein the screw nut (1) in the use position of the nut parts has a shoulder surface (26) extending towards the axis of the internal thread in the region of a first end of the internal thread, characterized by the fact that the shoulder surface (26) deviates from a plane extending radially to the axis of the internal thread and is such that the radially outer region of the shoulder surface (26) with the greatest distance to the axis of the internal thread has the greatest axial distance from the second end of the internal thread and the inner region of the shoulder surface (26) with the smallest distance to the axis of the internal thread has the smallest axial distance from the second end of the internal thread.